Samurai Nihon-Ichi Memory Map

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Memory Map

The following is a memory map that was generated based on the MAME source code (.180). This information is only as accurate as the MAME driver is. If you see any errors, please let me know what that error is.

The Memory Area is related to where the information is from (CPU, Sound Board, etc..), and it may also reflect what it has in common with other hardware.

Samurai Nihon-Ichi (bootleg, 1985)

Memory Area:main_map

Address Range	Length	Function	Description
0x0000-0xBFFF	49152	ROM
0xC000-0xCFFF	4096	RAM
0xD803	1	Read	tsamurai_unknown_d803_r
0xD806	1	Read	unknown_d806_r
0xD900	1	Read	unknown_d900_r
0xD938	1	Read	unknown_d938_r
0xE000-0xE3FF	1024	RAM Write, Shared	fg_videoram_w, videoram
0xE400-0xE43F	64	RAM Write, Shared	fg_colorram_w, colorram
0xE440-0xE7FF	960	RAM
0xE800-0xEFFF	2048	RAM Write, Shared	bg_videoram_w, bg_videoram
0xF000-0xF3FF	1024	RAM, Shared	spriteram
0xF400	1	Write NOP
0xF401	1	Write	sound_command1_w
0xF402	1	Write	sound_command2_w
0xF800	1	Read Port	P1
0xF801	1	Read Port, Write	P2, bgcolor_w
0xF802	1	Read Port, Write	SYSTEM, scrolly_w
0xF803	1	Write	scrollx_w
0xF804	1	Read Port	DSW1
0xF805	1	Read Port	DSW2
0xFC00	1	Write	flip_screen_w
0xFC01	1	Write	nmi_enable_w
0xFC02	1	Write	textbank1_w
0xFC03-0xFC04	2	Write	coincounter_w

Memory Area:sound1_map

Address Range	Length	Function	Description
0x0000-0x3FFF	16384	ROM
0x6000	1	Read	sound_command1_r
0x6001	1	Write NOP	(/* ? - probably clear IRQ */)
0x6002	1	Device Write	dac1, dac_byte_interface, write
0x7F00-0x7FFF	256	RAM

Memory Area:sound2_map

Address Range	Length	Function	Description
0x0000-0x3FFF	16384	ROM
0x6000	1	Read	sound_command2_r
0x6001	1	Write NOP	(/* ? - probably clear IRQ */)
0x6002	1	Device Write	dac2, dac_byte_interface, write
0x7F00-0x7FFF	256	RAM

Memory Area:z80_io_map

Address Range	Length	Function	Description
0x0000-0x0001	2	Device Write	aysnd, ay8910_device, address_data_w

ROM Map for this game

This is the ROM map for the game. This should tell you what address the ROM is at, how big it is, what it's used for.

Memory Area:audio2

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	a35-13.4j	CRC(3828f4d2) (Fluke: 80B2)

Memory Area:audiocpu

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	a35-14.4e	CRC(f10aee3b) (Fluke: 13EB)
0x2000-0x3FFF	8192	a35-15.4c	CRC(1e0d1e33) (Fluke: C494)

Memory Area:gfx1

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	a35-04.10a	CRC(b97ce9b1) (Fluke: 3E53)
0x2000-0x3FFF	8192	a35-05.10b	CRC(55a17b08) (Fluke: FB8B)
0x4000-0x5FFF	8192	a35-06.10d	CRC(f5ee6f8f) (Fluke: 59E8)

Memory Area:gfx2

Address Range	Length	Label/Location	Description
0x0000-0x0FFF	4096	a35-10.11n	CRC(0b5a0c45) (Fluke: 340C)
0x2000-0x2FFF	4096	a35-11.11q	CRC(93346d75) (Fluke: 1D74)
0x4000-0x4FFF	4096	a35-12.11r	CRC(f4c69d8a) (Fluke: 28A0)

Memory Area:gfx3

Address Range	Length	Label/Location	Description
0x0000-0x3FFF	16384	a35-07.12h	CRC(38fc349f) (Fluke: 310C)
0x4000-0x7FFF	16384	a35-08.12j	CRC(a07d6dc3) (Fluke: 0F24)
0x8000-0xBFFF	16384	a35-09.12k	CRC(c0784a0e) (Fluke: 9F9B)

Memory Area:maincpu

Address Range	Length	Label/Location	Description
0x0000-0x3FFF	16384	a35-01h.3r	CRC(551e1fd1) (Fluke: B115)
0x4000-0x7FFF	16384	a35-02.3t	CRC(e3fa0cfa) (Fluke: 5D0C)
0x8000-0xBFFF	16384	a35-03.3v	CRC(2fff1e0a) (Fluke: AF06)

Memory Area:proms

Address Range	Length	Label/Location	Description
0x0000-0x00FF	256	a35-16.2j	CRC(72d8b332) (Fluke: AEDD)
0x0100-0x01FF	256	a35-17.2l	CRC(9bf1829e) (Fluke: A364)
0x0200-0x02FF	256	a35-18.2m	CRC(918e4732) (Fluke: 3FB8)